Solution : https://service.sap.com/sap/support/notes/1244194 (SAP Service marketplace login required)
Key words : 
file src/packages/web-inf/classes/crm~tc~appbase~resources, dc crm/tc/web/appbase, brute force attacks additional security checks, sap crm webchannel / sap e-commerce, role sap_isa_uadm_manager additional security checks, additional security enhancements/checks, cross-site request forgery, edit/copy user {0}um, added security checks, sc sap-shrweb
Related Notes : 
       
| 646140 | Security Check of Internet Sales |